js-quality

Tool selection depends on your project's existing configuration. Biome provides unified linting and formatting in a single tool with zero-config defaults, while ESLint+Prettier offers more granular control and wider ecosystem support. Prioritize project-configured tools; if none exist, Biome's modern approach reduces toolchain complexity.

Migration involves detecting your current ESLint and Prettier configurations, understanding their rules, and translating them to Biome's equivalent settings. The process covers project-root config discovery and ensures your code quality standards remain consistent during the transition.

Yes. The tool-selection process detects existing configurations and applies group-priority logic to determine the active toolchain. Your project's current ESLint setup takes precedence; Biome becomes an option if you explicitly decide to migrate or if no configuration exists.

For new projects without configuration, the tool-selection logic applies sensible defaults, falling back to Biome's zero-config approach. This delivers a concrete active-toolchain decision and configuration guidance without manual setup overhead.

The process discovers project-root configuration by detecting biome.json, .eslintrc files, and Prettier config files. It prioritizes explicit project configurations and provides fallback guidance to default settings when none are found.

Unified tooling reduces configuration complexity, eliminates tool conflicts, and improves build performance by running linting and formatting in a single pass. Modern tools like Biome balance speed with the capability traditionally split across ESLint and Prettier.